TPS65311-Q1: VI_hys

Youhei Miyaoka

Expert 3865 points

Part Number: TPS65311-Q1

Hi team,

Could you please teach me about VI_hys.

Does this mean, VI_high min=2V +/- VI_hys, that is, VI_high min=1.5V to 2.5V?
Similarly, VI_low max = 0.3v to 1.3v?

Regards,

Youhei MIYAOKA

over 1 year ago

+1 Niko Alatalo over 1 year ago

TI__Mastermind 19550 points

Hi Youhei,

in practice you only have to consider the VI_high and VI_low values to make sure the function works as intended. The hysteresis is the voltage range around the mid point. In this case the mid point at which the logic level changes its value between 0 and 1 is about 1.4 V. Hysteresis would be around this level. Hysteresis effectively eliminates 'motorboating' when the input signal changes rapidly around the threshold level.

You can read the basic explanation for hysteresis in logic signals here.

At the end you have to only make sure that your high level signal is above 2 V and low level signal is below 0.8 V.

regards,

Niko

0 Youhei Miyaoka over 1 year ago in reply to Niko Alatalo

TI__Expert 3865 points

Hi Niko,

Thank you.

In my understanding, Voltage threshold is below. The customer is OK to think only two value; Max 2.0V and min 0.8V. Is this correct?

Regards,

Youhei

+1 Niko Alatalo over 1 year ago in reply to Youhei Miyaoka

TI__Mastermind 19550 points

Hi Youhei,

yes this seems to be correct and it is recommended to only think the max and min values (2.0 V and 0.8V).

regards,

Niko

0 Youhei Miyaoka over 1 year ago in reply to Niko Alatalo

TI__Expert 3865 points

Hi Niko,

Thank you.

Regards,

Youhei

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TPS65311-Q1: VI_hys